Connecting Circuit Components with Wires

To add a wire to the circuit:

Click the toolbar button Insert Wire or choose Wire in the Insert menu.
Click on the start point of the wire and drag cursor to the end point of the wire. Then release the mouse button. The wire connecting start point and end point will be added.

Notes:

This way you may add either the vertical wire segment, or horizontal wire segment, or two wire segments, vertical and horizontal, making the right angle. To create wire of more complex shape you should repeat this operation several times.
Wires are always aligned to a nearest grid node. It means that the wire will be placed so that its end points are at grid nodes.

Adding junction points:

To add a junction point, you should just place a wire so that one of end points belongs to some existing wire. Junction point will be added in this point automatically.

Placing a wire so that it intersects another wire in a middle point for both wires is different. In this case the junction point will not be added, and the wires will be considered as not connected.

Shortcut: CTRL+W